ITV's Carl Dinnen was asking the questions, which were sent in by Labour Party Members.

Here's how it happened.

22:43

RECAP: Corbyn invites Donald to tea in a mosque

Jeremy Corbyn extended an invitation to Donald Trump tonight, saying if he won the US election, he’d invite him to discuss “culture and diversity” in his local mosque.

Mr Corbyn was asked what he’d do if the Donald won the US election and he was elected Prime Minister, during a Labour party leadership debate in Birmingham.

Asked if he would be friendly to President Trump, he raised laughter from the audience, saying: “What I would do is try and help him.”

He went on: “I would invite him to come to Finsbury Park, in my constituency, and we could go to a lovely building just around the corner, and we can talk about culture, diversity and history over a cup of tea in the Mosque.”

Closing statements

Owen Smith sums up by reminding the audience this is our generation’s most important decision for Labour men and women.

He says if we stick with Jeremy, Labour will remain a divided opposition to a right wing Tory government. We’ll sleepwalk towards a Brexit Britain with privatised services.

The alternative is to vote for him. He says he’d unite the party and try and turn the movement in the country into an effective opposition and exercise power in parliament.

He’s convinced that Labour can win the next election because their ideas have never been more relevant. “If you put your faith in me...that will be my aim. To win the next election and take Labour back into power. Our choice must be to serve not ourselves, but our country. We need to make the contry a better place, and we can only do that with power.”

Owen Smith

Corbyn says we were all devastated by last year’s election results, and what the Tories have done since. But since then we’ve changed the economic debate in this country. Everybody - apart from the Tories - are now anti-austerity. We’ve grown the party, he says, and brought more activists into local parties. Labour has to change the way they do things in order to talk to the wider community, but in the last year they have won by-elections in the country and done well in the local elections, he says. It’s about restoring dynamic ideas that speak to the country.

Creating new jobs in green industries, creating an investment bank, “giving the back door” to companies like Sports Direct and Deliveroo, supporting childcare and ending discrimination, so that Britain is a community where no-one and nothing is left behind.

Jeremy Corbyn (Image: Youtube/Labour Party)

20:31

Supporting working mothers?

Smith would start by increasing their income. He’d reverse cuts to tax credits through universal credit, and institute a proper in-work support through our social security system.

(Image: Youtube/Labour Party)

Corbyn says he would “close the gender pay gap”, and end the iniquity in some businesses that stops women getting top jobs. He’d also encourage girls more in schools, so they’re not directed towards certain jobs and not others.

20:29

How would you make my child's future a bright one?

Corbyn says he’d build a society based on fairness, and one where children grow up understanding that each generation needs to put something back in to society for the next generation.

(Image: Youtube/Labour Party)

Smith says he’d make them wealthier by putting in a “proper” living wage, stopping the public sector pay freeze and improving union rights. He would also reintroduce baby bonds, a labour innovation that George Osborne got rid of.

Favourite book not written by a man?

Would you put up VAT or income tax?

Corbyn says he wouldn’t increase the rate of income tax, but he’d reintroduce the 50p rate.

He says he wouldn’t put up VAT, but he’d look harder at dealing with tax avoidance and evasion.

Smith says he’d do that, also introducing a 15% tax on share dividends - and he’d cut VAT because it’s regressive - “if we had a Labour government.”

Corbyn comes back to say he would look at cutting VAT.

Smith says he’d deal with people like Philip Green, by introducing his share tax and reversing the pensions rate relief.

20:22

How will Labour appear pro-business or anti-business?

Corbyn says we have a mixed economy of public and private sector. He says good companies do well when they treat people well.

He says Greggs are a good company, and do well. But Sports Direct and Deliveroo (who are also doing pretty well, to be fair) do not.

Smith says we rely too much on the service sector, and we should be more ambitious about making things. He’d have an active industrial strategy, and under him “we would stay in Europe” to safeguard trade and jobs.

He says that’s the most powerful message we can send to the British manufacturing industry.

Corbyn says we have to recognise the referendum took place, even though decision wasn’t what he or Owen wanted.

He says we need to negotiate a relationship with Europe to ensure trade and jobs are protected, and the Tory alternative is a “bargain basement” offshore island with reduced protections for workers rights.

(Image: Youtube/Labour Party)

He rules out a second referendum.

Owen Smith says that’s “weak leadership” from the Labour party. He says if a “bargain basement” Tory alternative is what’s on offer, we should say no. We should run on a Labour manifesto that would take us back into the European Union, and argue that we are stronger in.

Corbyn repeats roughly the same answer again - acknowledging the referendum happened, and calling for more negotiations with Europe. But he says we have to recognise that there were problems with the EU.

(Image: Youtube/Labour Party)

Smith says the reason Corbyn won’t argue for a second referendum is that in his heart he never wanted to be in the European Union. He thinks that’s a deep, deep mistake and will harm working people.

Corbyn repeats that “the referendum took place and there was a result”, again. He says “we can achieve” what he says about negotiating a good relationship.

Smith says if the result had been 60-40, it might have been different. There are some shouts from the audience. Smith says it’s clearly an audience which doesn’t support Labour Party policy, which is to stay in the EU.

“Why on earth are we accepting it as a fait a compli? I would fight for us to stay in the European Union.”

20:13

Views on Hinckley Point nuclear power station?

Corbyn says the Government have stalled on it because the costs of the energy that it produces will be very high indeed.

He also has concerns about nuclear waste disposal.

He wants a shift towards renewables as a more secure future for this country.

(Image: Youtube/Labour Party)

Smith says we need mixed source power in this country, including more investment in renewals. But he says in both nuclear and renewables we rely on Chinese investment or PFI to build them. He wants a renewable sector renewal fund to build those things.

But he says Theresa May halting Hinckley Point and jeopardise the jobs involved was a really bad move.

(Image: Youtube/Labour Party)

Asked if he’d also put those jobs at risk, he says the costs would be high and if it goes ahead the jobs would still be there. And there need to be more jobs created in green energy as well.

Smith says the price of Hinckley C is enormous, and we should be thinking about investing in it ourselves. Why on earth are we unable, as the 6th richest country in the world, relying on France and China to invest in these projects?

20:08

An elected Lords?

Unsurprisingly both candidates would replace the Lords with an elected upper chamber.

Corbyn adds that he would ensure it reflected the whole of the UK.

Smith suggests it could be in Birmingham. He’d avoid it being just a replica of the house of commons by giving it lesser powers and ensuring it was filled proportionally based on areas of the country.

(Image: Youtube/Labour Party)

20:07

Education?

Corbyn would stop treating education for under fives and over 18s as a commodity, and treat it as a right.

He would ensure that every young person would have the opportunity of a university place or good apprenticeship.

(Image: Youtube/Labour Party)

Smith would take free schools back into council control, he’d stop the public sector pay freeze and ensure there’s “proper wrap around care” in our education system. Labour must invest in education, and it needs to borrow to do that.

Corbyn would turn grammar schools into comprehensive schools, and seemed to call for a parliamentary group to bring back the secondary modern.

Funding for the NHS

Smith says he would put an extra 4% funding a year into the health service, which would allow for more investment and reinstating nursing bursaries.

He says he’d pay for that with wealth taxes, a 50p rate of income tax and other tax increases.

(Image: Youtube/Labour Party)

Corbyn says he’d repeal the Health and Social Care act which demands 49% of services to be carried out by private companies, end the scandal of PFI which drains the health service of resources and recognise that there’s a mental health crisis in the country and deal with it.

(Image: Youtube/Labour Party)

20:01

Points based immigration?

Corbyn says in effect we already have a system of entry that’s based on income and skills and a lot of it is deeply unfair.

We should also recognise, he says, that immigration has been a massive benefit to our public services. We need an immigration policy that’s rational.

Smith says the fact that the question’s asked highlights the lies told by the Tories. We already have a points based system, he says. It wasn’t long ago Theresa May was sending “go home” vans around the country. We need to recognise immigration has been good for the country.

19:58

Nuclear Weapons

Smith says he doesn’t think either Trump or Putin would get rid of their warheads just because Britain did. He thinks we need to use our power to encourage other nations to do so.

Corbyn says he looks at the disasters that happen around the world, and asks himself whether nuclear weapons helped prevent them. The answer is no. He says he wants his Labour Government to do what a Labour government brought in, which is the treaty to take steps towards nuclear disarmament.

Asked if the country would ever vote for a person who could not countenance using a nuclear deterrent, he says he doesn’t believe we live in a country where the majority believe we should have and use nuclear weapons.

“Surely we can do things differently.”

(Image: Youtube/Labour Party)

Smith says Jeremy “ducked the question” - he says he doesn’t think the country will support us if we have a unilateralist position, which is a shame. But we know this from history - Labour have supported unilateral disarmament before, and have never been elected on that basis.

Smith says Jeremy can’t lead Labour to power for a number of reasons, but one of them is unilateralism. The country wants its government to be serious about defence, and they see nuclear weapons as being about defence.

(Image: Youtube/Labour Party)

Corbyn says he’s been to loads of countries that don’t have nuclear weapons and listened to what people have to say there.

“But we’re talking about Britain, Jeremy”, quips Smith.

Smith adds that in his constituency the issue of nuclear weapons seldom comes up. He says sometimes that’s a bad thing, because we don’t talk about it as much as we used to. But when it does come up, it’s people saying we need to be serious about defence.

He says “we need to win elections” and would be naive not to acknowledge public feeling on the matter.

19:56

How would you deal with Russia invading another Nato state?

Corbyn says he’d try and avoid that happening in the first place.

He says it’s looking a lot like a “cold war” state of things. He’d engage with Russia and encourage demilitarisation in the area.

Smith says “obviously” we’d have to come to the aid of the invaded country, but he’d want to use diplomacy to try and prevent it in the first place.

(Image: Youtube/Labour Party)

Asked if he’d come to the aid of the fellow NATO state, Corbyn says he’d want to avoid it by building up diplomatic relationships and not isolate other countries.

(Image: Youtube/Labour Party)

Pressed again on whether he would go to war to protect another Nato country, he won’t budge. He says he wouldn’t want to, and wants to build a world where that won’t happen.

(Image: Youtube/Labour Party)

Smith says nobody wants to go to war, but of course we have to go to the aid of a Nato country.

19:48

If Donald Trump was president, how would you maintain relations?

He says Donald Trump fills him with trepidation. Someone in the audience calls out “so does Hillary” - Owen says that’s a “silly thing to say.”

But he says whoever was President, he’d have to try to work with them.

Corbyn says a lot of the “simplistic statements” made by Trump are “beyond belief”.

But he says whoever is President he’d have to talk to them and ensure the TTIP doesn’t go ahead. (Some cheers for that one)

(Image: Youtube/Labour Party)

Owen says the relationship between the US and UK was too close on the Iraq War, which he would have voted against if he had been in parlaiment.

He says he supports Hillary Clinton, because we need a Democrat in the White House, and a Labour man or woman in Downing Street.

(Image: Youtube/Labour Party)

Corbyn says he’d try to “help” Trump, by inviting him to his constituency for a cup of tea in a Mosque.

19:44

How do we stop the Syrian civil war?

Corbyn says the crisis is “beyond appalling” - he did not support the bombing of Syria, because he couldn’t see it would do any good.

He says the Geneva talks need to restart, and we need to recognise the migrant crisis is not the fault of the refugees and do more to help them.

(Image: Youtube/Labour Party)

Smith says he agrees with everything Jeremy just said. He voted against the bombing, and says bullets and bombs will not solve the problem.

He says the Labour party is internationalist, and it’s only a Labour government that can ensure the country gets involved.

(Image: Youtube/Labour Party)

Corbyn says no, ISIS don’t have to be involved in peace talks - the nation states have to be involved, but the idea that you’d sit down with ISIS does not make sense. He’s clear there has to be a political solution.

Smith says this is a complex and serious issue and it’s not one that can be sorted in a 140 character tweet.

He says that had he been able to finish his sentence in yesterday’s debate, he would have made clear that we should never negotiate with terrorists - ISIS included.

He says he has experience of bringing about peace, having been part of the team negotiating in Northern Ireland. He says there were people who had committed murder involved in those talks, but only once they had renounced violence.

ISIS haven’t renounced violence, but if they did, of course they should be involved in talks.

(Image: Youtube/Labour Party)

Corbyn notes that inevitably some of the weapons we sell around the world will end up in ISIS hands, and the oil they sell around the world brings them in money. Cutting both off will help.

19:38

Would you scrap right to buy?

Smith says “yes” - Right to buy has been a disaster for society. It was a “massive mistake”, he says, especially considering the failure of successive governments to build houses to replace them.

He’d allow councils to borrow to build more houses.

(Image: Youtube/Labour Party)

Corbyn says RTB was a “clever trick by the Tories who went round the country selling £10 notes for a fiver.”

He says he’d scrap it, and increase support and protections for renters. Crucially, he says, we need to build more houses, reintroduce lifetime tenancies and stop “pay to stay”

(Image: Youtube/Labour Party)

19:36

Childcare

Corbyn says he wants to achieve universal childcare for all pre-school children, because the costs to parents can be absolutely huge.

(Image: Youtube/Labour Party)

Smith says he’d start by rebuilding the Sure Start centres. One of his own children learned to speak because of specialist support in a Sure Start centre.

He says we do need wrap around childcare and improve conditions and pay for teachers.

(Image: Youtube/Labour Party)

19:34

PMQs

Corbyn says he wasn’t fond of the “yah boo” atmosphere of PMQs, and preferred to use questions sent in from the public.

He says we all learn from our experience, but it was important to bring in the questions of those who put them there.

(Image: Youtube/Labour Party)

Smith says he needs to remember the electorate put them there, and it wasn’t ‘yah boo’ to hold IDS to account for what he did to the country.

(Image: Youtube/Labour Party)

19:32

Leadership role models

Owen Smith says his leadership is Nye Bevan, the founder of the NHS. He says Bevan knew that to make change, you have to be in power, and he’s not prepared to sit back and wait for it.

Jeremy Corbyn says he doesn’t have a single leadership role model. He’s inspired by the struggle against an elitist system that works against ordinary people.

Mr Smith says it’s not good enough, because 170 “socialist MPs” have expressed no confidence in his own leadership.

There are boos and shouts from the audience. Owen Smith speaks directly to the audience, because the debates so far have not been held in a comradely fashion.

He says the implication that Jeremy is the only socialist in the party is an “insult to Labour MPs”, and calls on Corbyn to ask his supporters to stop booing Labour MPs.

(Image: Youtube/Labour Party)

Corbyn says “obviously” we should conduct the debate in a “comradely fashion”. He says it’s odd that Labour MPs say they want a united party, when they’ve refused to take part in front bench activities. He says he has reached out to those who have resigned.

Smith says he was disappointed to only get one meeting with him in nine months, Lilian Greenwood was disappointed Corbyn “undermined her” over bus fares. He says he was disappointed he didn’t seize the opportunity to attack the PM after Iain Duncan Smith resigned, and he says he was disappointed he didn’t mention Europe at Theresa May’s first PMQs.

Corbyn says they met every week around the shadow cabinet table - to which Smith says “you didn’t say very much.”

(Image: Youtube/Labour Party)

19:25

How to win over ex-Labour and Tory voters

Corbyn accepts that Labour has to win over some people who have been tempted to vote Tory. He says that can be done by asking the rich if they feel “happy” walking past the homeless. And to energise the young, who don’t tend to vote at all

Smith says they don’t just need to convince some people who were tempted to vote Tory, it’s two million people.

He says it’s a problem with the current leadership - especially when polls show more Labour voters prefer Theresa May to Jeremy Corbyn.

Jeremy says “I think we appeal to people on the basis of the decent society we can create” - which is one that cares for everyone, not just the few.

(Image: Youtube/Labour Party)

Smith says that fundamentally, that’s true, but the country needs investment to lower class sizes, build houses and not saddle students with debt.

He says the difference between them is that Jeremy thinks they’re on the right course to deliver a victory and he doesn’t. He asks Jeremy if he thinks we “need to be a Labour government once more.”

Corbyn says the choice of a party that’s against austerity and for equal rights for all is a powerful one, which applies all across the country.

Smith challenges Jeremy again, saying he thinks the party are on a trajectory to win an election, and he doesn’t.

(Image: Youtube/Labour Party)

“I was 27 before I saw a Labour government, I don’t want to be 67 before I see another.”

Jeremy says we need to work together to achieve victory, which is why he’s so disappointed with the resignations from his cabinet.

19:19

What Labour can learn from Blair's election victories

Owen Smith says Labour can learn from Labour’s victories in the 90s and 00s, because they had a “vision” for Britain.

A “concrete proposal” the public can trust, that Labour knows the problems in British communities, and knows how to fix them.

Corbyn says in the 90s the public were fed up with the Tories and what they did to Britain.

But he says the Labour government made mistakes in the economy, through using PFIs to build hospitals, and not building enough housing.

(Image: Youtube/Labour Party)

Smith says he should like a lot of the policies of the Blair era - including raising pensioners out of poverty, sure start and the minimum wage.

There were mistakes, he accepts, but he says “we make a mistake if we attack our record.” He says in the last election Labour did that too much, and if we do that again, “the Tories will attack us too.”

(Image: Youtube/Labour Party)

Corbyn says he does appreciate the successes of the previous Labour administration, but says he also has criticisms about their approach to terrorism and the Iraq war.

HS2

What he’s interested in is what happens after HS2 - with investment in transport links to the north east and north west.

Owen Smith agrees, saying if Isembard Kingdom Brunel came to modern Britain to look at our railways, he’d recognise them because he built most of them.

And he agrees with Jeremy that HS2 should have been started in the North.

(Image: Youtube/Labour Party)

Corbyn adds that HS2 isn’t an excuse to neglect and not invest in the upkeep of existing railway lines, but he thinks it’s too late to change the plans for HS2.

Smith, however, suggests it could be possible to build from the north and the south and meet in the middle. He asks what we’re doing with so much of our railways owned by companies from overseas - “we should own our own railways.”

He says rail prices are “obscene” and a Labour government should work to lower them, and do it through nationalisation

(Image: Youtube/Labour Party)

19:11

Lowering government debt

Owen Smith says the first thing we have to do is recognise that it was bankers’ greed, not Labour spending that caused the financial crisis.

He says the party didn’t make that argument strongly enough in 2015 - but that anti-Austerity is the way forward for the party.

Jeremy Corbyn says we should be lowering debt by increasing investment and growing the economy.

But he says we should be measuring our society not just by financial measures, but by social goals as well.

He says it was a mistake for George Osborne to put a “five year plan” time limit on lowering the deficit - which he said was “always five years away.”

(Image: Youtube/Labour Party)

Smith said the debt does matter, but the Tories have failed to deliver on it. They’ve “raised a false god” of debt and deficit, and Labour should be much bolder about the kind of economy we want to create.

It shouldn’t be a question of whether we can’t afford to do things, he says, but if we can afford not to.

We're underway

He’s been explaining the format - and asking people not to applaud for too long and not to boo or heckle out of respect for those who’ve sent in the questions.

18:58

The format

Here’s how tonight’s debate will work

Who is in the audience?

There will be a studio audience of 500 Labour members and supporters, picked randomly from those who applied to attend.

Each side have been allowed to bring a small number of their own supporters - around 15 each - to be in the audience.

Who picks the questions?

All the questions have been posed by audience members at the event, who wrote them when applying.

They have all been selected in advance.

How long does each man get to answer?

There will be no opening statements.

Each question will allow a 40-second answer from each candidate before opening up to a general debate.

Each candidate will then get two minutes at the end to sum up their argument.

(Image: PA)

18:26

DING DING! Round 4

It’s Thursday. It’s almost 7pm. And we all know what that means.

It’s time for another Labour Leadership Debate.

Tonight marks the fourth occasion Jeremy Corbyn will go head to head with challenger Owen Smith.

Previous bouts have seen them exchange blows on everything from serious policy to meaningless trivia - and we hope tonight will be no exception.

Yesterday morning’s debate, broadcast on the BBC, saw Mr Smith appear to suggest a peaceful resolution to the Syria conflict could involve sitting down for talks with ISIS - although he later said the group would have to renounce violence before any talks could take place.

And Mr Corbyn stunned viewers by being unable to identify Ant and Dec.

We’ll have the debate in full, along with the usual commentary and reaction, right here as it happens. Stay with us.